title: Silica microtoroid resonator sensor with monolithically integrated waveguides.
abstract: Due to their wide operating range, silica toroidal whispering gallery mode microresonators have enabled numerous applications from fundamental physics to lasing and sensing. However, the integration of a waveguide with these microresonators has not been achieved which limits their integration with additional on-chip components. Here, we demonstrate a novel approach for monolithically integrating a silica microtoroid with an on-chip waveguide to form a fully integrated microtoroid-waveguide system with quality factors in excess of 4 million. Similar to the conventional toroidal cavities, power-independent operation is demonstrated. UV and temperature sensing experiments are also performed using the monolithically integrated microtoroid-waveguide system.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Zhang
authors.forename: Andrea M
authors.initials: AM
authors.lastname: Armani